Road roller and scarifier



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GEORGE G. ABBE AND ROY C. WILLIAMSON, 0F KENNETT SQUARE, PENNSYLVANIA,ASSIGNORS TO AMERICAN ROAD MACHINERY UOMTPANY, INQ, OF .KENNETT SQUARE,PENNSYLVANIA, A CORPORATION OF DELAWARE.

ROAD ROLLER AND SCARIFIER.

Application filed September 24, 1924. Serial No. 739,489.

Our invention relates to an improvement in road rollers ant, scariiiersand is more particularly directed to the production of'a convenient andeconomical device which may be used in connection with road building andimprovement operations and which will be adaptable for use in connectionwith road maintenance.

I-Ieretofore there have been produced various types of road rollerspowered with internal combustion engines, but such are relativelyexpensive in first cost and also in operatlon. Further, such roller-sare cumbersome and primarily usable only on relatively large operations.

Now it is the object of our invention to provide means whereby the wellknown Fordson tractor may be .adapted to the production of a road rollerwhich will be highly efficient, economical and of a wide range ofutility, and further to provide means whereby scarifying means may beapplied to the roller with efficiency.

As a result of our invention there is provided a road rolling andscarifying device essentially including a Fordson tractor which resultsin a device of such simplicity as to be operable by relatively unskilledhands and one for which repair parts and service are obtainable almostany where throughout the country.

Having now indicated in a general way the nature, purpose and advantageof our invention, we will proceed to a detailed description thereof withreference to. the accompanying drawings in which we have illustrated apreferred embodiment and in which:

Figure 1 is a side elevation of a road roller embodying our inventionwith the scarifier elements omitted.

Figure 1 is a sectional Figure 1.

Figure 2 is a plan view, partlyin of the roller shown in Figure 1.

view on line 1 Figure 2 is a perspective view of means for securingtheroller wheels to their axle.

Figure 3 is a side elevation partly in sectionof means for supportingthe frame of the roller. V

Figure a is an end view, partly in section of the subject of Figure 3.

Figure 5 is a plan view showing scarifying section toward each otherthroughout a major portion of their length and braced by means of crossmembers 0 and cl intermediate their ends and by a plate 6 adjacent theforward end. I The Fordson tractor unit a is mounted on and supported bythe frame, the forward end being supported by engagement of the crossmember 0 with the forward end of the crank case of the unit, in place ofthe front axle assembly as shown in Figure 1 The rear end of the tractorunit is supported by means of brackets e secured to the side members ofthe frame. The brackets 6, one of which is shown in detail in Figures 8and 4, are secured oppositely to the side members-of the frame by meansof rivets or bolts and are. provided with a clamping member f adapted toembrace the rear axle housing 9 of the Fordson tractor adjacent itsopposite ends and secure it to the bracket .by which it is supportedfrom the frame.

Thus it will be observed that the tractor unit is supported by theframe, 5, at its forward'end by cross member 0 and at its rear endthrough being clamped to brackets e secur-ed. to the side members of theframe.

Beneath the forward end ofthe frame I) is a wide single wheel or roller2', preferably made in two sections as shown. The roller 6 is mounted onan axle j carried by an inverted U shaped frame is, secured to a hangerZ pivotally mounted beneath the forward end of the frame Z). Secured tothe frame is is avertical shaft in uponthe upper end of which is secureda segmental gear n,

adaptedto be rotated, for turningfthe roller 7 i and steering themachine, by means of a suitably mounted worm gear operable by a handwheel at the operators station through a shaft 1) leading to the rear ofthe machine.

The machineis driven by a pair of wide tread wheel orroller members gwhich with the rollers 2' act to roll a surface of substantial width.The rollers Q are mounted on an axle r mounted in bearings 8 formed inbrackets e. The vdrive from rear axle t of the Fordson tractor unit iseffected by means of sprockets a secured to the ends of the Fordsontractor axle, in place of the usual wheels, through chains 1), tosprockets w on the hubs m of rollers g; and which may be of a size togive any desired gear reduction.

It will now be observed that the rollers g are driven from the rear axleof the Fordson tractor and if the rollers or Wheels Q are mounted so asto turn on the axle r, as

shown in Figure 1 the rollers a will have the benefit of thedifierential included in the Fordson tractor drive. However undercertain circumstances the differential may be distinctly disadvantageousas when one of the rollers g is running on soft or slippery surface. Inorder to enable the elimination of the action of the Ford differentialon the rollers 9 under such circumstances, the

ends of the hubs m are slotted as at y and there are providedwheelretainers 2 adapted to slip over and be secured to the axle by means ofbolts to retain the rollers thereon. The retainers are plain on one sideand are provided on the other side with ridges or keys it. If the effectof the differential be desired, the retainers are put on the axles withtheir plane sides against the ends of the hubs and secured to the axle,in this position the rollers may turn relatively to the retainers and tothe axle 1". If, on the other hand, the effect of the differential is tobe eliminated, the retainers are reversed and the keys i entered in theslots y in the hubs, so that when the retainers are secured to the axlethe rollers will be locked thereto and both rollers will act as a unit.In order to provide for convenience in cranking the engine of theFordson tractor there is applied to the end of the lateral powertake-off shaft a starting crank 4 accessible to the operator when at theoperators station. The end of the power take off shaft is covered bymeans of a housing 5, secured to the engine crank case and extendedbeyond the end of the power takeoff shaft for supporting the startingcrank, as shown in Figure 2.

As we have indicated, our invention in cludes the application of ascarifyingv device to the roller structure, the scarifier and itsapplication is shown in Figures 5 and 6.

Extending between the side members of frame 6 are a pair of shafts 6 and7 sup ported by brackets 8 and 9 respectively secured to the framemembers. At intervals on shaft 6 are rotatably mounted arms 10 separatedby spacers 11 to which are secured levers 12 at the free ends of whichare provided clamps 13 in which are adjustably secured scarifying tools14-. At intervals on shaft 7 are secured cranks '15 which are pivotallyconnected. to links 16, which in turn are pivotally secured to levers12. Secured adjacently to one end of shaft 7 is a segmental gear 17adapted to be turned by a worm 18, on the end of a vertical shaft 19mounted in a bracket 20 and provided on its upper end with a hand wheel21.

It will now be clear thatthe scarifying device is positioned beneath andsupported by the frame I) and operates between the rollers or wheels 9.The scarifying tools 14: may be adjusted in their clamps 13 and throughrotation of shaft 7 by means ofhand wheel 21, which results in raisingor lowering the levers 12 whiclnas has been .described, arepivotallysupportedby shaft 1) through arms 10. y

The operation of the device embodying our invention will, it isbelieverhbe obvious,

butit will be noted that without any change in the Fordso-n tractorunit, beyond the removal ofthe frontaxle assembly and rear wheels, thereis provided an efficient and economical road rolling and scarifying unitto which motive means adapted for other purposes can readilybeconnected.

It will be understood that while in the description of the preferredembodiment of our invention we have referred to the Fordson tractor, anysuitable form of tractor unit may be utilized, or, if desirable, a powerunit may be built up, without departing from our invention.

Having now fully described our invention,

what we claim and desire to protect by Letters Patent is: V

1. A road machine comprising, in combination, a frame, a roller mountedbeneath the forward end of the frame, a pair ofrollframe, a tractor unithaving a rear axle and houslng therefor, means to support the unit fromthe frame, said supporting means inunit and supports for the two ends ofthe axle housmg and means affording driving llU vers mounted oppositelyat the rear of the r eluding a support for the front of the tractorconnections between the rear axle of the having a rear axle and housingtherefor,

means to support the forward end'of the tractor unit from the frame,means to secure the rear axle housing of the unit-to said brackets,anaxle supported by said brackets, a roller mounted on each end of saidaxle and means affording driving-connections between the rear axle ofthe tractor unit and said rollers.

3. A road machine comprising a pair of rear rollers mounted on the endsof an axle, a driving sprocket connected to each roller, a frame form-edof a pair of side members, and a plurality of cross members, bearingsfor said axle connected to the side members of the frame, said sidemembers extending upwardly at their forward "ends, a third rollerpivotally mounted below the forward ends of the side members of theframe, a support on the frame for the front end of a tractor unit, and aclamp at each side of the frame at the rear thereof for the recep tionof the rear axle housing of a tractor unit.

a. A road roller comprising, in combination, a frame, a roller pivotallymounted beneath the forward end of the frame, brackets oppositelysecured to said frame adjacent the rear end thereof, a Fordson tractorunit having a rear axle and housing therefor, means to support theforward end of the tractor unit from the frame, clamps carried by saidbrackets adapted to engage the rear axle housing of said tractor unitand secure it to the frame, bearings formed in said brackets, an axlerotatably mounted in said bearings, rollers mounted 011 the ends of saidaxle, sprockets mounted on the ends of the tractor unit rear axle,sprockets secured to the rollers and chains passing over said sprockets.

5. A road roller comprising, in combination, a frame, the front end ofwhich is bent upwardly and forwardly, a roller pivotally mounted beneaththe front end of the frame, a pair of brackets secured to opposite sidesof the frame adjacent the rear end thereof, a Fordson tractor unithaving a rear axle and housing therefor, means extending transversely ofthe frame'forming a support for the forward end of the tractor unit,means carried by the said brackets adapted to engage the rear axlehousing of the tractor, an axle supported by said brackets, rollersmounted on sald axle and means affording driving connections between therear axle of said tractor unit and said rollers.

to swing about a vertical axis, bearings mounted on the rear ends of theside members and extending upwardly therefrom, an axle mounted in thebearings above the side members, a roller mount-ed each end of the axleon the outside of the side frame members, and means on the frame forsupporting a tractor unit on the frame in driving relation to the rearrollers.

7. A road roller having a frame comprising longitudinally extending sidemembers, a plurality of cross members connecting the side members toeach other, a roller for supporting the front end of the frame arrangedto swing about a vertical axis, bearings mounted on the. rear ends ofthe side members and extending upwardly therefrom, an axle mounted inthe bearings above the side members, a roller mounted each end of theaxle on the outside of the side frame members, means on the frame forsupporting a tractor unit on the frame in driving relation to the rearrollers a pair of transverse shafts supported by the side members of theframe between the rollers on the axle, levers having road surfaceworking means on their free ends mounted on one of said shafts, andelevating means connected to said levers and the othershaft.

In testimony of which invention, we have hereunto set our hands, atKennett Square, Pennsylvania, on this 17th day of September, 1924.

GEO. o. ABBE. ROY 0. WILLIAMSON.

